The first VR gun controller prototypes are ready for testing on real guns.
Shown below are pictures of the controller on a Belgian Browning 20 gauge. The trigger controller has a paddle trigger next to the trigger guard. The motion tracker is an HTC Vive controller fitted to a bore arbor in the muzzle. Gen 2 will use the Vive Tracker
The view from the headset:
The trigger controller can be flipped over for left handers: